I've had quail for a few years now. Cots and I've had Bob whites. They hatch early (the cots) and are pretty easy to grow out. But some are mean as hell so you must be prepared to cull heavy in the beginning ( and this is not to give away quail) They are easy to process and make decent birds if you want them for pets. They can't free range and do ok on hardwire. I like mine on the ground but the pens are hard to keep clean.
I'd buy alot of eggs at once and hatch out. Then plan to cull as necessary. I don't like to buy anyone's adults (ducks I will) as it opens the door to disease. Plan to incubate what you raise they don't set well and the eggs are too small even for a bantam to set on. Although I've seen others do it, it's risky.
Good luck. They are a great bird to raise.